关键词: 主要多年生栽培草种, 草种区划, 草坡资源, 气候土壤条件

Abstract: This study was based on a team work of a part on the study of the delimitation cultivated forages in South China which was worked during last decade.Accor-ding to the results of field experiments of introductions and screens of culti-vated forages in different areas in this region,natural environmental condition particularly the climatic factors and the authors leves of evaluation,the au-thor suggests that those forages are divided into four groups and each of them adapted in a subregion.1.The first subregion is situated in the south of 25°N with low lands and hilly lands and of tropical and southern subtropical climates without winter.The cultivated forages are Macroptilium atropurpureum “DC” Urb.,Leucaena leu-cephala “Lam” de Wit,Stylosanthes guianensis CV Graham,Setaria anceps var.se-ricea CV kazungula,and Paspalum wettsteinii Hackel.2.The second subregion is located on 25°N in the areas of hilly lands and low mountains with a middle subtropical climate of annual average temperature of 17—20℃.The cultivated forages include Desmodium infortus “Mill” Urb.D.un-cinatum “Jacq” DC,Leucaena leucephala “Lam” de it,Paspalum wittsteinii Hackel,and P.urvillei Stends.3.The third subregion is located the middle elevation above 600—800 mind in-cluding the northern parts of Fujian,Guangdong provinces and Guanxi Outono-mous Region,with a long winter of four mouths above elevation of 1100m.The cultivated forages include Trifolium repens L.Lolium perenne L.and Dactylis glomerata L.4.The forth subregion is located in the southern part of yunnan province with a tropical and southern subtropical climate.The cultivated forages include Macroptilium atropurpureum “DC” Urb.,Stylosanthes guianesis CV.Graham,Paspalum wettsteinii Hackel and Pennisetum purpuveum Schumach.